Which conditions should be included in the differential diagnoses of ankle sprains?

Updated: Jan 14, 2019
  • Author: Craig C Young, MD; Chief Editor: Sherwin SW Ho, MD  more...
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Other factors

Active ROM must be assessed, because Achilles tendon ruptures can mimic ankle sprains. Extensive swelling, ecchymosis, or pain may suggest an osteochondral lesion not observed on plain radiographs. CT scanning is useful for evaluating osteochondritis dissecans and stress fractures. MRI may be useful when osteochondrosis or meniscoid injury is suspected in patients with a history of recurrent ankle sprains and chronic pain. [6] A bone scan can detect subtle bone abnormalities (eg, stress fracture, osteochondral defects). A bone scan can also detect syndesmotic disruption.

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